Door



sept. 24, 1940. 5.1..;653-

DOOR

Filed Aug. 1-1, 1937.

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' ATTORNEY.

Sept. 24, 1940. aLJAcos 231769,12

Filed Aug. ,1 1, `1951 n' 4 sheezssneet 2 umllllllnnf! In muunneunmgm! lili@ 1 l.. uw; d! IM n! A'ITRNEY.

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Filed Aug. 11,v 1,937 4 shapes-shan 4 HIIIIIIHIL IIIHIHN" Il HHH INVENTOR Imm Patented Sept. 24, 1940 STATES PATENT ofi-"FICE y rv'nooit A I .v .Ellis*L. Jacob, .Moylan-Rose@Valley,.Pa.. assignor f .to Edward G Budd ,Manufacturing Company, Philadelphia, Pa.,y atcorporaton. of Pennsyl- Vania I Tl1is "'invention. yrelates to improvements ink l doors and more particularly to a bulkhead door which is adapted to be sealed under pressure."

One of 'thev principaly objects of the present ,in- 5 vention is to provide a 'multiplefastening-constructionA for a bulkhead or similaruid pressure tight door operated bya common'control sothat theentire` peripheral edge ofo'the doormay be simultaneously sealed.

Another object of myinvention is to provide lal metal.' door construction having a plurality* of rotatable locking dogs'. such'door being yprovided With'an internal panel removably securedto the dogjournals so that the operating mechanism l5 within the/door canfbeco'rnpletely sealed to pre-- Y vent the entranceof vermin,` dust, etc; o x

A` further object'of the invention is to provide an improved doorconstructionyhaving'a 'high strength and great rigidity with the fastening A mechanism'carried internally` in the reenforcing structure so that the door is imperforate lexcept for a single actuating control.

Another and moreparticular object' of the in l v vention is to provide an improvedlinkage for 'the 25 simultaneous operationof `:afplura'lity of fastening mechanisms by rvacornmon gear havinga tripy so adapted thatl it cannot "be ,accidentally'oper-ff ated with the door-,in open position and'A injwhich the'fastening mechanisms are all controlled byr a `f single system of interconnected links.

Further objects and advantages of my invention will appear from the following description of n a preferred form of embodiment thereof taken `in connection with'th'eattached drawingsy in which: Fig.' 1 is an outsidejelevation ofy one form of embodiment/ of 'the'.do'orand adjacent frame.

Aliig. 2 'is v'an inside Aelevation of the door andV part of theaframe with the door in'A open posi- .40 Fig. 3 is an inside elevation of the door and frame shown inligs.r 1 and 2 with the internal?y Sealing plate removed from the door to showits internal mechanism. 'l v f "i Fig. 4 is a horizontal section substantially on the line 4 4 ofFig.- 3 showing the dog operatingmechanisl.

Fig.- 5 is-a vertical section taken-.substantially along the vline 5-5of-Fig. 3, and showing the hand wheel control mechanism.

l y Fig, 6 is aninside elevation of amodied form'r` of door with the sealing panel removed and showf-v ing adifferenttype O'I` linkage. I

Fig. V'7` is a horizontal section taken substantial- 66 Fig.' 8 4is ya horizontalosection taken substanf tiallyalongjthe line 8"-8 of Fig. 6 and showing a modified form of dog and operating"mechanismy associated therewith. f j

Fig. 9'is a'verti'calsection taken substantially along thelne' 9`9` of Fig. 6 showing other parts vof the dog'operatingmechanisml Fig. 10 is a vertical'sectionl taken substantially.. along the line Ille-I0 of Fig. 'showing themanner ofreenforcement'of `the central part ofthe door. i l

' Fig. llisa'fragmentary'sectional view on the y same scale 'as Figure '7, the* sectionvr being taken substantiallyon the line IIII of Fig. 7 looking in the direction o the'arro'ws at thev ends of the section line. l

vFig. rl2 kis a vertical section showing the dog journal' block construction.

In accordance kwith oneform of 4embodiment ol'fmy invention. more particularly shown in Figsf 1y to 5 inclusive, vlhave shown a doorgenerally indicated at I0 which is'providedjwith an externall panel 'II which may have local bumps j sisted may becomesubstantial.`

Theinterior of the door is provided witha \plu' rality of rotatable dogs 'I6 which are mounted around theperipheryr of the door and which are adaptedto extendbeyondthevperiphery to contact. with wedges 2U as shown in Fig. 4.' Thev dogsy lli are provided with a projecting head por'-A tion I8 terminating in va wedge surface `llzwhichy cooperates with the wedgez'carried on the in.-i

terior ofthe 'framework I4. o

kEa'cl'd'og'hasra central trunnion 2| with an operating portion 22 which may be polygonal por otherwise'fastened so that it maybe rotated by the link arm 23. The dogis mounted in asuitable `journal memberg. which in this form of'v constructionyis shown to be bolted to the door frame by the bons 45 and 46, `it being understood that .a journal-member. is provided forfeach, dog raround.theperiphery ofthe door. Y

The doglinkfarins 23 r'areof several shapes'toj be properly connected with the connecting links 28 which are in turn operated from the operating links 29.? The-operating link armr 23,for example, A, is a` compound arin which is `adapted to-receive two connecting links 28 and the main operating link 29. Other link arms are of the simple lever type as shown at 23a and the bell crank type shown at 23h. .It will be noted that in this form of construction, the linkage is duplicated on each side and on each end of the door so that there are two main operating links 29, each of which operates one-half of the dogs.

The main operating links 28 -are each connected to a sector 30 which is suitably pivoted to the door framework and operated by the spur Vgear 3| revolving about the fixed shaft 32, an extension of said spur gear extending through the plate 42 and operated by the hand wheel 35 as shown in Fig. 5. Also geared to this spur gear 3l is a second spur gear 34 carried by a shaft driven by the external Wheel 33 so that there is a direct interconnection between the respectiveA hand Wheels 33 and 35 and the sector 30 by `which the links are operated. The sector rotates about pivot 36. j

The gear reduction is suchv that a rotation of either wheel of less than two revolutions will move the dogs from acomplete off position to a complete Yon position. l

Operation of the hand wheels is prevented when the door is in the open position by a latch 38 engaged by keeper 39 which in turn is operated by the trip 40 which contacts with the frame flange 14a which extends around the opening in the frame I4. Under normal conditions with the door open, latch 38 engages the keeper 39 and isreleased when the door is closed by the trip 40 engaging the flange 14a.

The interior of the door may be readily covered by a cover plate 42 extending over all of the operating mechanism and suitably notched out around the respective dogs` I6 and secured to the dog journal blocks 43 by the screws 4I with the result vthat the operating` mechanism is completely covered and there is no possibility of vermin getting into the interior of the door. There are no slots or other openings except the cylindrical bearings for the dogs and hand wheels with the result that the sanitary qualities of the door can be maintained.`

the door.

In a modiiied form of construction as shown in Figs. 6 to 12 inclusive, the outer panelof the door is generally represented at 50 in Figs. '1 and 10 and may likewise have the reenforcing pro.- jections 58a, but in this form' of construction, the `panel 50 is substantially of one piece extending across the entire frame opening. It may be reenforced on the inside by channels 5I 5Ia such as shown in Fig. 6 and Fig. l0, which channels are preferably Welded to the face plate Y to eliminate apertures through the door. This door is similarly provided with a plurality of dogs 54 which, as shown in Fig.g8, are similarly provided with projecting portions 55 terminating in a wedge surface 56 which cooperates with the wedges 51 carried by the outside framework 58.

As in the prior construction, each dog 54 is journaled in a this case, the journal block is bolted as by the bolts 6I to the reenforcing channels 5I and it is unnecessary for the bolts 6| to extend through Furthermore the journal block may be constructed as a separate sub-assembly member, which facilitates assembly of the sub-assembly unit to the door structure.

Each of the dogs is connected through suitable link arms 15 with the links 16 and 11 forming a continuous circuit as shown in Fig. 6. Certain of the links 11 are adapted for adjustment.v

and

suitable bearing block 68, but in V16a and 1Gb.

It will be noted that upon rotation of the hand-wheel 62 which is fastened to an extension ofthe spur gear 64, said gear revolving upon the'flxed shaft 63, the gear 64 will rotate the gear 55 which in turn is geared to the sector 61 to move the respective connecting links 16. The other hand wheel 66 is mounted on the extension 65a on the gear 65.

The interconnection between the hand wheel 82 and the hand wheel 66 is shown in detail in Fig. 7 and it will be noted that the stub shaft 65a, on which gear 65 is formed, is drilled at 8Iv and has a reduced cross section as shown at 82 forming a kerfed portion into which grease and packing may be forced when the plug 83 is removed. In this manner, a water-tight joint can be formed and as this is the only aperture through the outer plate 50 of the door, leakage can be prevented. The expansion of the packing sets up no longitudinal strain on the parts as it is entirely resisted by the stub shaft 65a.

The `movement of the dogs into closing position will .be apparent in Fig. 6. If the sector is moved counter-clockwise the link 16a will set up tension in the entire link `circuit in a counterclockwise direction until all of the dogs 54 are moved. In this direction of movement, the link 1Gb becomes redundant and although it may be subjected to some compression, the deflection is comparatively negligible and it does no appreciable work. An opposite movement of the sector 614 causes the link 16a to become redundant in a similar manner.

The link structure is such that all of the links are thus in tension, and it is possible to make them of relatively small cross section and therefore of very light weight. The bearing loads may be relatively heavy, however, and as'shown in Fig. 9, it is possible to take full advantage of the thin links YWithout damage by using a reenforcing plate 85 spot welded or otherwise fastened Vto the link 16 throughoutthe pivot portion as defined by the clevis pin 86. By doubling the area available for shear, excessive stresses are not introduced.y

An interlock to prevent the operation of moving the dogs to locking position when the door is in open position is shown in Figs., '1 and l1 and consists of a' trip member 81 which is engageable with the flange 58a onrthe door frame 58. The trip member 81 is pivoted at 81a and directly acts von the angle member v88a which is a part of the bar 88. This bar, which is held in locking position by spring 89, extends to the pawl which is engageable with the ratchet v9| on the gear 84, and this tends to lock the gear 84 from rotating if the door is open. The spring 89 is'suitably anchoredto the door body through angle 92.

In this form of construction, the weight of the sector 61 is so arranged that it tends to close the dogs 10 when thek door is shut and the keeper released. It will benoted that the sector is in a raised position when the dogs are 'in an inoperative position, and when the door isy closed, with the keeper releasing the hand wheels for movement, the sector tends to vdrop and will assist in moving the .dogs to the operative position. While this is not a fully automatic -arrangement, it facilitates the quick closing of the door.

While I have shown a preferred formof embodiment of my invention, I am aware that modifications may be made thereto and I therefore desire a broad interpretation of my vinvention `Within the scope and spirit of the description herein and of the claims appended hereinafter.

What v`I` claim is: 1. In a door of the class described, a,- plurality of clamping dogs pivoted on the door at'an angle to the plane of the door and at spacedpoints along its peripheral margin, a pivotedactuator onvthe door and common to said dogs, a pair of links connecting said pivoted actuator to two dogs adjacent thereto-and onvopposite `sides thereof, and a continuous chain of light`l exible links interconnecting the said adjacent dogs and extending around the margin of.A the door 'and the remainingdogs and. arranged to be in tension only in either direction of movement of the actuator, the first-named pair of links being arranged to be in tension, respectively, inonly one of the directions of movement andA idle in the other direction. n s

2. A door having a plurality of fastening dogs mounted therein adjacent its periphery and vat both sides and ends of the door, said/'fastening dogs being movable to operative position to clamp Y the door rmly against a frame surrounding it or to inoperativeV position to permit opening of the door, common actuating mechanism mounted on the door forsimultaneously moving al1 said dogs to operative or yinoperative positions as'` desired, said common actuating mechanism comprising a rotary member mounted tof turn in the plane of the door, and means on `,the outer face of the door connected to turn said member and a 'continuous chain of light flexible links interconnecting said member and the dogs successively around the margin of the door, one of said links connected to the rotary lmember being' inactive in movingthe dogs in one direction and all of the remaining links being active in moving the dogs in said direction Vand arranged to be subjected only to tension inforced in the region of saidhinged connection by lreinforcing strips thereto. K e f 6. A door, according to c1ai'm2 having face l plates on opposite sides'thereof'a'nd in which the dogs are pivoted in the margins of the door betweenA said lace plates and on separate'pivot i blocks, and means for securing the pivot blocks in place between said plates y l without perforating the face plates of the door.

ELLIS jL. JACOB.

integrally secured 

